We have received images of a white building under construction behind the Yerba Buena Center of the Arts, the venue for Apple’s ‘Spring Forward’ event on March 9th. The tipster said that security guards are patrolling the scene, wearing ‘Apple Security’ shirts, confirming the connection between the building and Apple.

Apple built a similar external structure for the Apple Watch’s original unveiling in September, which acted as a demo hall for the products (iPhone 6 and Apple Watch) that Apple had announced at the event prior. Given the similarities, it is likely that this is the purpose of this new building as well.

It is worth noting, however, that in the past Apple has simply used side rooms inside Yerba Buena for its demo areas. Unlike the Flint Center, previous events show that there is space for indoor demos if Apple wanted to use it.

Ahead of its October 22nd iPad and Mac event, Apple has begun dressing up the Yerba Buena Center for the Arts in San Fransisco with banners. While the banners have just begun going up, it is easy to see that the banner will match the theme of the event’s invitation: fall-inspired leaves. We’ll continue to update this post as more images of the banners come through to tips@9to5mac.com. Thanks David Jones for the images!